Actori
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Adam WilliamsDave Brewster -
Michel RayBud Brewster -
Jackie CooganHank Johnson -
Ty HardinSentry -
Johnny CrawfordKen Brewster -
Russell JohnsonJoe Gamble -
Peter BaldwinJames, politist de la securitate
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Raymond Andrew BaileyDr. Wahrman
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Richard ShannonLieutenant Colonel Manley
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Larry PennellMajor Thomas
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Howard JoslinRadar Operator
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Vera MarsheFrieda Johnson
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Eilene JanssenPhyllis Manley
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David BairSaul Wahrman
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Sandy DescherEadie Johnson
